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Combining Waveform and XY Data with Non-Uniform Timestamps in a Single LabVIEW Graph

Updated Sep 22, 2025

Environment

Software

  • LabVIEW

This article outlines a method for combining waveform data with uniform timestamps and another dataset with non-uniform timestamps in LabVIEW. This approach is especially useful when you want to visualize and compare waveform data from hardware-timed acquisition with data from software-timed acquisition that uses non-uniform timestamps.

1. Launch LabVIEW and create a New VI. 

2. Create the block diagram of the VI, as shown in the diagram below.
 
Note: This image is a LabVIEW snippet, which includes LabVIEW code that you can reuse in your project. To use a snippet, right-click the image, save it to your computer, and drag the file onto your LabVIEW diagram.

3. Substitute the waveform data and the dataset with non-uniform timestamps with your own relevant data.

4. Run the VI and observe the signal on the front panel.

After running the VI, both datasets will appear on the same graph as shown below.

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